changing the inactivity time for arp cache

[axfalk]

We have a switched network with a whole bunch of Cat-2980G switches and a couple of 6506's core ones with the MSFC's. We need to increase the inactivity time for the arp cache on the MSFC's from the existing 4 hours to probably 16 hours. Can someone please refer me to a doc or tell me the ramification of changing the inactivity time on the rest of the switches and the network?

Thanks.

[umedryk]

Use the command arp timeout and increase the arp timeout value. As far as my knowledge goes, there will be no much effect on the other switches in the network but the switch that you are configuring this on will be consuming more RAM as you would increase the number of the stored values.